@article{SM_1997_188_1_a0,
     author = {Yu. A. Aminov},
     title = {Geometry of {the~Grassmann} image of a~local isometric immersion of {Lobachevskii} $n$-dimensional isometric immersion of {Lobachevskii} $n$-dimensional},
     journal = {Sbornik. Mathematics},
     pages = {1--27},
     publisher = {mathdoc},
     volume = {188},
     number = {1},
     year = {1997},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1997_188_1_a0/}
}